CN105702468B - A kind of SMD alminium electrolytic condenser of small size, low cost - Google Patents

A kind of SMD alminium electrolytic condenser of small size, low cost Download PDF

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Publication number
CN105702468B
CN105702468B CN201610196960.9A CN201610196960A CN105702468B CN 105702468 B CN105702468 B CN 105702468B CN 201610196960 A CN201610196960 A CN 201610196960A CN 105702468 B CN105702468 B CN 105702468B
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China
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smd
electrolytic condenser
aluminum hull
alminium electrolytic
machine
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CN105702468A (en
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王永明
成琳
田金波
张庆涛
吴海斌
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Shanghai Yongming electronic Limited by Share Ltd
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SHANGHAI YONGMING ELECTRONIC CO Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/145Liquid electrolytic capacitors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004Details
    • H01G9/022Electrolytes; Absorbents
    • H01G9/035Liquid electrolytes, e.g. impregnating materials

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)

Abstract

The present invention relates to a kind of small size and the SMD alminium electrolytic condenser of low cost, it is characterised in that is produced using the production equipment of conventional wire formula alminium electrolytic condenser.In the production process of SMD alminium electrolytic condenser, the present invention is impregnated with using traditional lead wire type aluminum electrolytic electric capacity containing dipping machine, it is ensured that impregnation effect.Simultaneously, the present invention has used the electrolyte of special proportioning during impregnation, so that the SMD alminium electrolytic condenser produced can not only cross Reflow Soldering, and the volume for the SMD alminium electrolytic condenser for produce greatly reduces, meet the small form factor requirements of the equipment using the SMD alminium electrolytic condenser.

Description

A kind of SMD alminium electrolytic condenser of small size, low cost
Technical field
The present invention relates to a kind of SMD alminium electrolytic condenser, belong to aluminium electrolutic capacitor technical field.
Background technology
Small-sized alminium electrolytic condenser includes lead type electric capacity and SMD electric capacity.Lead type electric capacity has two straight pins, It is advantageous that process equipment is more ripe, its operating voltage range is from 4V to 450V, or even to 500V, 550V and 600V, It is disadvantageous in that:The mounting means manually inserted can only be used to complete the group of complete machine by wave-soldering or human weld again Dress, production efficiency are low.SMD electric capacity is then to be placed in drawing for seat board after lead passes through seat board and 90-degree bent after flattening shaping Formed in wire casing.It is advantageous that full-automatic surface mount installation can be realized, it is full-automatic on a large scale applied to high efficiency In metaplasia production, but it also has weak point:1st, volume is big, and the volume of interiors of products core bag is no more than the one of its aluminum hull inner space Half, its purpose is to the high-temperature soldering by Reflow Soldering, this measure and complete machine miniaturization, the trend of densification carry on the back completely and Speed, even more bring the rising of cost;2nd, cost is high, and 1. the aluminum hull of traditional SMD products uses the alloy aluminum of high intensity, such as trade mark For 3003 or 3004,2. aluminum hull surface needs film, and 3. film coated surface needs with UV ink lettering and passes through ultra-violet curing;This Three reasons all bring cost increase;3rd, the production equipment accommodation used is narrow, and one group of equipment can only use 1-2 size Product, it is desirable to which producing new size then needs to purchase new equipment, puts into huge, indirect lifting cost;4th, current SMD products Operating voltage range covers 4V to 100V, why can not produce 160V to 600V mesohigh or even superelevation die pressing product, and it is former Because being the restriction by production equipment, production technology (mainly impregnation is difficult to be impregnated with) and Reflow Soldering high temperature.In production, energy Because the problem of its viscosity is big faces impregnation, difficulty is impregnated with the electrolyte of tolerating high voltage, existing patch capacitor production equipment can not expire The problem of foot production;In erecting and welding, it is poor to be resistant to the heat resistance of high-tension electrolyte, can not cross Reflow Soldering.
As the continuous lifting of electronic equipment demand, and electronic equipment increasingly tend to minimize, conventional wire formula Electric capacity can not realize automation erecting and welding, be increasingly difficult to meet the growth requirement of electronic equipment, and SMD electric capacity is certain Can solve the problems, such as to automate erecting and welding, improve efficiency, but its volume is big, cost is high, of single specification, production equipment input A series of problems, such as huge, voltage range is limited to low pressure, cause to obtain extensive using and substituting the production of conventional wire formula Product.
Such as LED, LED is a kind of efficient energy-saving equipment, its development is being carried forward vigorously in market, hair Exhibition tends to include miniaturization, densification, efficiently cost degradation, production and scale.And alminium electrolytic condenser is important in LED Component, its electrochemical capacitor used cover voltage from 4V to 600V, thus also have high voltage, miniaturization, low cost, can realize A series of efficient and large-scale production requirements.But due to current SMD alminium electrolytic condenser exist it is as described above it is a variety of not Foot, so the electric capacity in LED carries out plug-in unit production using lead wire type aluminum electrolytic electric capacity, hinder the small-sized of LED Change, low cost, the development trend of scale high efficiency, mutually deviate from market.
The content of the invention
The technical problem to be solved in the present invention is:Reduce the cost of SMD alminium electrolytic condenser;Expand SMD aluminium electroloysis The operating voltage of electric capacity;Reduce the volume of SMD alminium electrolytic condenser;Reduce the production equipment input of SMD products.
In order to solve the above-mentioned technical problem, the technical scheme is that providing a kind of small size and the paster of low cost Formula alminium electrolytic condenser, it is characterised in that produced using the production equipment of conventional wire formula alminium electrolytic condenser, including at least volume Comprise the following steps around machine, containing dipping machine, group vertical machine, jacketing machine and ageing machine, production technology:
Sub-prime of the winder winding after the completion of is impregnated with using containing dipping machine after drying, impregnation uses electrolyte The polyvinyl alcohol, 0.3%~1.0% p-nitrophenol, 4%~8% sweet dew that percent mass proportioning is 1.5%~3.0% The ethylene glycol of alcohol, 5%~10% ammonium sebacate and surplus, the sub-prime that has been impregnated with load surface not film and with interior explosion-proof In the aluminum hull of structure, followed by group vertical machine clean again after group is vertical, recycle jacketing machine in one layer of sebific duct of aluminum hull overcoat, should One lateral edges of sebific duct are only covered to the place with a tight waist of aluminum hull, institute is placed at 180 DEG C using sebific duct continue at least 10 minutes after rise Temperature is at least 260 DEG C and continues at least 1 minute, keeps indeformable, non-discolouring, then by arranging plate, ageing machine aging, testing, draw Turn into the new SMD alminium electrolytic condenser after line shaping and seat board installation.
Preferably, the aluminum hull uses the aluminium trade mark as 1060,1070 or 1100.
Preferably, one side of the aluminum hull close to lead being defined as top surface, the one side away from lead is then defined as bottom surface, The thickness of the bottom surface of aluminum shell is 0.30~0.45mm;
The interior blast resistance construction includes the anti-explosion groove positioned at aluminum hull inner surface, and the explosion-proof slot length accounts for aluminum hull bottom radius of circle 1/2~4/5.
In the production process of SMD alminium electrolytic condenser, the present invention uses the impregnation of traditional lead wire type aluminum electrolytic electric capacity Machine is impregnated with, it is ensured that impregnation effect.Meanwhile the present invention has used the electrolyte of special proportioning during impregnation so that The SMD alminium electrolytic condenser produced can not only cross Reflow Soldering, and cause the body of SMD alminium electrolytic condenser produced Product greatly reduces, and meets the small form factor requirements of the equipment using the SMD alminium electrolytic condenser.Further, because the present invention exists What is used in the production process of SMD alminium electrolytic condenser is all the production equipment of traditional lead type, so production cost is significantly Reduce, and the manufacturer of existing lead wire type aluminum electrolytic electric capacity need not the special SMD electric capacity production equipment of buying, cloth Putting new producing line just can realize the production of SMD alminium electrolytic condenser, it is easier to so that whole alminium electrolytic condenser industry turns on a large scale Type, faster promote alminium electrolytic condenser Surface Mounting Technology process, so as to realize using SMD alminium electrolytic condenser electronic equipment (such as LED) extensive automation surface mount production so that industry development is consistent with China's state basic policy.
Brief description of the drawings
Fig. 1 is a kind of structural representation for SMD alminium electrolytic condenser that the present invention obtains.
Embodiment
To become apparent the present invention, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
Embodiment 1
A kind of small size provided by the invention and low cost SMD alminium electrolytic condenser use conventional wire formula aluminium electroloysis The production equipment and production technology of electric capacity are produced, and used production equipment includes up- coiler, containing dipping machine, the vertical machine of group, set Pipe machine, ageing machine etc., its production technology comprise the following steps:
Sub-prime of the winder winding after the completion of is impregnated with using containing dipping machine after drying, the sub-prime being impregnated with loads outer Surface is stood not in film and aluminum hull with interior blast resistance construction, then by the vertical unit of group, then after cleaning, using jacketing machine in aluminium One layer of resistant to elevated temperatures sebific duct of shell overcoat, then turn into paster after row's plate, ageing machine aging, test, lead shaping, seat board installation Formula alminium electrolytic condenser.
In above-mentioned production technology:The percent mass proportioning of electrolyte used in impregnation is:3.0% polyvinyl alcohol, 0.3% p-nitrophenol, 8% mannitol, the ethylene glycol of 10% ammonium sebacate and surplus.Used in the present invention The conventional electrolysis liquid phase specific viscosity of electrolyte and ad eundem reduces by 30% or so, and boiling point improves 35 DEG C or so and reaches more than 220 DEG C. Polyvinyl alcohol and p-nitrophenol in electrolyte have lifting oxidation efficiency, accelerate the effect of alumina medium deposition velocity, Avoid producing gas during product is seasoned, 50% is reduced to the spatial margin demand inside alminium electrolytic condenser.Therefore, it is resulting The volume of SMD alminium electrolytic condenser can narrow down to original 60%~70%.
The material of film and the aluminum hull with interior blast resistance construction can not select the aluminium that the trade mark is 1060,1070 or 1100 etc. Material.With reference to Fig. 1, one side of the aluminum hull 1 close to lead 2 is defined as bottom surface, the one side away from lead 2 is then defined as top surface, then exists In the present invention, interior blast resistance construction is anti-explosion groove 3, and anti-explosion groove 3 is located at the inside bottom surface of aluminum hull 2.The thickness of the bottom surface of aluminum hull 1 in the present invention For degree than conventional aluminium thickness of the shell increase by 10%~20%, thickness reaches 0.30~0.45mm.Its length of center anti-explosion groove 3 accounts for aluminum hull 1 The 4/5~1/2 of bottom radius of circle, so that the explosion-proof pressure of the aluminum hull of the common material rises 20%.
In the present invention, sebific duct is required of:This sebific duct is placed on continue 10 minutes at 180 DEG C after be warming up to 260 DEG C continue 1 minute, keep indeformable, non-discolouring.With reference to Fig. 1, a lateral edges of sebific duct 4 are only covered to 5 positions with a tight waist of aluminum hull 1 Place, another lateral edges are then covered to the top edge of aluminum hull 1.
Production equipment and production of the SMD alminium electrolytic condenser provided by the invention using conventional wire formula alminium electrolytic condenser Technique is produced, such as the up- coiler of conventional lead formula product, containing dipping machine, group vertical machine, jacketing machine, ageing machine etc..Use biography The equipment of system can ensure the impregnation effect of high-tension product, and this is that SMD electric capacity production equipment special can not be realized , while the operating voltage of SMD alminium electrolytic condenser can also be extended to highest 600V.
The cost of the SMD alminium electrolytic condenser obtained using above-mentioned technique is only the conventional patch formula aluminium electroloysis of same specification The 60%~70% of electric capacity.
Embodiment 2
The present embodiment and the difference of embodiment 1 are that the quality percentage of electrolyte is matched somebody with somebody used in impregnation in the present embodiment Than for:1.5% polyvinyl alcohol, 1.0% p-nitrophenol, 4% mannitol, the second of 5% ammonium sebacate and surplus Glycol.Other are same as Example 1.

Claims (1)

1. the SMD alminium electrolytic condenser of a kind of small size and low cost, it is characterised in that using conventional wire formula aluminium electroloysis electricity The production equipment of appearance is produced, and is included including at least up- coiler, containing dipping machine, group vertical machine, jacketing machine and ageing machine, production technology Following steps:
Sub-prime of the winder winding after the completion of is impregnated with using containing dipping machine after drying, impregnation uses the quality of electrolyte Per distribution ratio is 1.5% ~ 3.0% polyvinyl alcohol, 0.3% ~ 1.0% p-nitrophenol, 4% ~ 8% mannitol, 5% ~ 10% last of the ten Heavenly stems The ethylene glycol of diacid ammonium and surplus, the sub-prime being impregnated be fitted into surface not film and with interior blast resistance construction aluminum hull in, with Using group vertical machine clean again after group is vertical afterwards, recycle jacketing machine in one layer of sebific duct of aluminum hull overcoat, a lateral edges of the sebific duct Only cover to the place with a tight waist of aluminum hull, institute is placed at 180 DEG C using sebific duct continue at least 10 minutes after be warming up at least 260 DEG C simultaneously Continue at least 1 minute, keep indeformable, non-discolouring, then by row's plate, ageing machine aging, test, lead shaping and seat board installation Turn into SMD alminium electrolytic condenser afterwards;
The aluminum hull uses the aluminium trade mark as 1060,1070 or 1100;
One side of the aluminum hull close to lead is defined as bottom surface, the one side away from lead is then defined as top surface, the aluminum hull bottom The thickness in face is 0.30~0.45mm;
The interior blast resistance construction includes the anti-explosion groove positioned at aluminum hull inner surface, and the explosion-proof slot length accounts for the 1/2 of aluminum hull bottom radius of circle ~4/5.
CN201610196960.9A 2016-03-31 2016-03-31 A kind of SMD alminium electrolytic condenser of small size, low cost Active CN105702468B (en)

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Families Citing this family (10)

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Publication number Priority date Publication date Assignee Title
CN108122677A (en) * 2016-11-29 2018-06-05 无锡泰威电子有限公司 The resistance to high ripple electrolytic capacitor of 20 × 35 aluminum hulls of φ
CN108122678A (en) * 2016-11-29 2018-06-05 无锡泰威电子有限公司 8.2 electrolytic capacitor with aluminium envelopes of φ
CN108122679A (en) * 2016-11-29 2018-06-05 无锡泰威电子有限公司 125 DEG C wide temperature electrolytic capacitor
CN108122674A (en) * 2016-11-29 2018-06-05 无锡泰威电子有限公司 Φ 16 × 36 plus insulation spacer electrolytic capacitor
CN108122676A (en) * 2016-11-29 2018-06-05 无锡泰威电子有限公司 6.3 × 15 electrolytic capacitor with aluminium envelopes of Φ
CN108122681A (en) * 2016-11-29 2018-06-05 无锡泰威电子有限公司 Resistance to 6KV lightning strokes electrolytic capacitor
CN108122680A (en) * 2016-11-29 2018-06-05 无锡泰威电子有限公司 7.5 electrolytic capacitor with aluminium envelopes of φ
CN108122675A (en) * 2016-11-29 2018-06-05 无锡泰威电子有限公司 More than 550V voltage electrolytic capacitors
CN108461310A (en) * 2017-11-09 2018-08-28 湖南艾华集团股份有限公司 The production method and automatic assembly line of alminium electrolytic condenser
CN110379631A (en) * 2019-06-21 2019-10-25 赣州市柏瑞凯电子科技有限公司 A kind of small size solid-state aluminum electrolytic capacitor

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CN202887994U (en) * 2012-10-23 2013-04-17 南通新联电子有限公司 Explosion-proof aluminum housing for electrolytic condenser
CN105244165A (en) * 2015-08-27 2016-01-13 广东风华高新科技股份有限公司 Chip type high-voltage aluminum electrolytic capacitor, electrolyte thereof and preparation method of electrolyte

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CN202887994U (en) * 2012-10-23 2013-04-17 南通新联电子有限公司 Explosion-proof aluminum housing for electrolytic condenser
CN105244165A (en) * 2015-08-27 2016-01-13 广东风华高新科技股份有限公司 Chip type high-voltage aluminum electrolytic capacitor, electrolyte thereof and preparation method of electrolyte

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Address after: 201406, No. 258, light Village Road, Yang Gong Industrial Park, South Bridge Town, Shanghai, Fengxian District

Patentee after: Shanghai Yongming electronic Limited by Share Ltd

Address before: 201406, No. 258, light Village Road, Yang Gong Industrial Park, South Bridge Town, Shanghai, Fengxian District

Patentee before: Shanghai Yongming Electronic Co., Ltd.